September weather forecast
Niceville, FL

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Weather in September

September, the first month of the autumn in Niceville, is still a warm month, with an average temperature ranging between min 74.7°F (23.7°C) and max 85.8°F (29.9°C).

Temperature

The transition into September marks the average high-temperature at a warm 85.8°F (29.9°C), differing minimally from August's 88.3°F (31.3°C). Throughout September nights, Niceville experiences a consistent temperature average of 74.7°F (23.7°C).

Heat index

September's heat index is estimated at a fiery hot 96.8°F (36°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Niceville, in September, it is raining for 18.5 days, with typically 3.07" (78mm) of accumulated precipitation. In Niceville, during the entire year, the rain falls for 169.5 days and collects up to 36.77" (934mm) of precipitation.

Snowfall

In Niceville, snow does not fall in February through December.

Ocean temperature

In Niceville, Florida, in September, the average water temperature is 82.9°F (28.3°C).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 77°F (25°C) to 84.2°F (29°C), without any unpleasant sensations for prolonged durations.

Daylight

In Niceville, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:22 am and sunset at 7:08 pm. On the last day of September, in Niceville, sunrise is at 6:39 am and sunset at 6:32 pm CDT.

Sunshine

In Niceville, Florida, the average sunshine in September is 9.4h.

UV index

In Niceville, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Notice! The reflection of water and sand increases the UV radiation significantly.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September in Niceville?

September temperatures in Niceville vary between a high-temperature of 85.8°F (29.9°C) and a low-temperature of 74.7°F (23.7°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 96.8°F (36°C).

What is the average humidity in September in Niceville?

The average relative humidity in September is 73%.

How much does it rain in Niceville in September?

In Niceville, during September, the rain falls for 18.5 days and regularly aggregates up to 3.07" (78mm) of precipitation.

When it does not snow in Niceville?

In Niceville, Florida, snow does not fall in February through December.

What is the ocean temperature in September in Niceville?

In September, the average ocean temperature is 82.9°F (28.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Niceville have in September?

The average day length in September is 12h and 20min.

What time are sunrise and sunset in September in Niceville?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 7:08 pm. On the last day of the month, in Niceville, sunrise is at 6:39 am and sunset at 6:32 pm CDT.

How many hours of sunshine does Niceville have in September?

In September, the average sunshine duration in Niceville, Florida, is 9.4h.

What is the UV index reading in September in Niceville?

The average daily maximum UV index in September in Niceville, Florida, is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Niceville, FL

Average temperature in September - Niceville, FL
  • Average high temperature in September: 85.8°F

The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is January (59.7°F).

  • Average low temperature in September: 74.7°F

The month with the highest average low temperature is August (79.2°F).
The coldest month (with the lowest average low temperature) is January (48°F).

Average pressure in September
Niceville, FL

Average pressure in September - Niceville, FL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

Average wind speed in September
Niceville, FL

Average wind speed in September - Niceville, FL
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in September
Niceville, FL

Average humidity in September - Niceville, FL
  • Average humidity in September: 73%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (68%).

Average rainfall in September
Niceville, FL

Average rainfall in September - Niceville, FL
  • Average rainfall in September: 3.07"

The wettest month (with the highest rainfall) is August (5.55").
The driest month (with the least rainfall) is May (1.57").

Average rainfall days in September
Niceville, FL

Average rainfall days in September - Niceville, FL
  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is August (24.5 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September
Niceville, FL

Average snowfall in September - Niceville, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Niceville, FL

Average snowfall days in September - Niceville, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in September
Niceville, FL

Average sea temperature in September - Niceville, FL
  • Average sea temperature in September: 82.9°F

The best month for swimming (with the highest average sea temperature) is August (85.8°F).
The coldest month (with the lowest average sea temperature) is February (61.6°F).

Average daylight in September /
Average sunshine in September
Niceville, FL

Average daylight in September / Average sunshine in September - Niceville, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 12min).
The months with the least sunshine are February and December (Average sunshine: 5h and 30min).

Average sunshine days in September
Niceville, FL

Average sunshine days in September - Niceville, FL
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is August (4.3 days).

Average UV index in September
Niceville, FL

Average UV index in September - Niceville, FL
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).

Average cloud cover in September
Niceville, FL

Average cloud cover in September - Niceville, FL
  • Average cloud cover in September: 25

The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 22).

Average visibility in September
Niceville, FL

Average visibility in September - Niceville, FL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Niceville, Florida, USA

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